Unless your Master is leaking...
...I wouldn't think you should replace it. Save that for when either your clutch Master or your Brake Master is leaking. Check your clutch slave hose for age. That is an easy replace while you are replacing your slave cylinder.
My time in Florida is very limited this trip. I am driving a Lexus from Toledo, Ohio to West Palm Beach for some snow birds. I have to unpack their vehicle and head to the airport Friday morning...not certain what time I will get into the area on Thursday. Depends on the road conditions and how good of time I am making. I should make it in Thursday afternoon, though.